From patchwork Mon Oct 16 20:10:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 13424091 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 16B3B36AFE; Mon, 16 Oct 2023 20:11:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="LjMtLS0E" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=cRIJK0L477qKsa1RgyOitdDzKo1JzlVVyIWmDMpqQlE=; b=LjMtLS0ERzR4VCVVkxcf6vJ6LF Px6ulMUEkd6ZzHya8NiEL8edOoEoQJS8UZaUMcRwm8/nxOrAgs8OInub+7LrICNMHwVoLkrKiLDeL WdPjzpRvQOduk3ZJ9Wmd6SM/9p9ijGVC0fPPgI3XzMrLB9cZTLWcsnxnMkZ513AZLCsHS4PDRRXuw iOhiosd1Fn/3UFBJRKKc/ZGH5PyR9rYwGeowOhAE72JA5BGVqC+NR4WHjeGfRegkTPt5GnIaVH+kr hVRJwvb+ezVoszgMrk+Z71lO+vnB7FOy2vsaFbg0BJ4Y2pbucq4kYMHJDgqLcPwrqP3JpAtOs43VA d79x7hXw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qsTvp-0085ae-58; Mon, 16 Oct 2023 20:11:17 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-fsdevel@vger.kernel.org, gfs2@lists.linux.dev, linux-nilfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, reiserfs-devel@vger.kernel.org, linux-ext4@vger.kernel.org, Pankaj Raghav , Andreas Gruenbacher Subject: [PATCH v2 06/27] gfs2: Convert inode unstuffing to use a folio Date: Mon, 16 Oct 2023 21:10:53 +0100 Message-Id: <20231016201114.1928083-7-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20231016201114.1928083-1-willy@infradead.org> References: <20231016201114.1928083-1-willy@infradead.org> Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Use the folio APIs, removing numerous hidden calls to compound_head(). Also remove the stale comment about the page being looked up if it's NULL. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Andreas Gruenbacher --- fs/gfs2/bmap.c | 48 +++++++++++++++++++++++------------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index f1d92e4d1538..f7ea1af9d842 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -43,53 +43,51 @@ struct metapath { static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length); /** - * gfs2_unstuffer_page - unstuff a stuffed inode into a block cached by a page + * gfs2_unstuffer_folio - unstuff a stuffed inode into a block cached by a folio * @ip: the inode * @dibh: the dinode buffer * @block: the block number that was allocated - * @page: The (optional) page. This is looked up if @page is NULL + * @folio: The folio. * * Returns: errno */ - -static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, - u64 block, struct page *page) +static int gfs2_unstuffer_folio(struct gfs2_inode *ip, struct buffer_head *dibh, + u64 block, struct folio *folio) { struct inode *inode = &ip->i_inode; - if (!PageUptodate(page)) { - void *kaddr = kmap(page); + if (!folio_test_uptodate(folio)) { + void *kaddr = kmap_local_folio(folio, 0); u64 dsize = i_size_read(inode); memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); - memset(kaddr + dsize, 0, PAGE_SIZE - dsize); - kunmap(page); + memset(kaddr + dsize, 0, folio_size(folio) - dsize); + kunmap_local(kaddr); - SetPageUptodate(page); + folio_mark_uptodate(folio); } if (gfs2_is_jdata(ip)) { - struct buffer_head *bh; + struct buffer_head *bh = folio_buffers(folio); - if (!page_has_buffers(page)) - create_empty_buffers(page, BIT(inode->i_blkbits), - BIT(BH_Uptodate)); + if (!bh) + bh = folio_create_empty_buffers(folio, + BIT(inode->i_blkbits), BIT(BH_Uptodate)); - bh = page_buffers(page); if (!buffer_mapped(bh)) map_bh(bh, inode->i_sb, block); set_buffer_uptodate(bh); gfs2_trans_add_data(ip->i_gl, bh); } else { - set_page_dirty(page); + folio_mark_dirty(folio); gfs2_ordered_add_inode(ip); } return 0; } -static int __gfs2_unstuff_inode(struct gfs2_inode *ip, struct page *page) +static int __gfs2_unstuff_inode(struct gfs2_inode *ip, struct folio *folio) { struct buffer_head *bh, *dibh; struct gfs2_dinode *di; @@ -118,7 +116,7 @@ static int __gfs2_unstuff_inode(struct gfs2_inode *ip, struct page *page) dibh, sizeof(struct gfs2_dinode)); brelse(bh); } else { - error = gfs2_unstuffer_page(ip, dibh, block, page); + error = gfs2_unstuffer_folio(ip, dibh, block, folio); if (error) goto out_brelse; } @@ -157,17 +155,17 @@ static int __gfs2_unstuff_inode(struct gfs2_inode *ip, struct page *page) int gfs2_unstuff_dinode(struct gfs2_inode *ip) { struct inode *inode = &ip->i_inode; - struct page *page; + struct folio *folio; int error; down_write(&ip->i_rw_mutex); - page = grab_cache_page(inode->i_mapping, 0); - error = -ENOMEM; - if (!page) + folio = filemap_grab_folio(inode->i_mapping, 0); + error = PTR_ERR(folio); + if (IS_ERR(folio)) goto out; - error = __gfs2_unstuff_inode(ip, page); - unlock_page(page); - put_page(page); + error = __gfs2_unstuff_inode(ip, folio); + folio_unlock(folio); + folio_put(folio); out: up_write(&ip->i_rw_mutex); return error;